rating=int(input())



if rating>=400 and rating <=599:
  print('8')
elif rating>=600 and rating <=799:
  print('7')
elif rating>=800 and rating <=999:
  print('6')
elif rating>=1000 and rating <=1199:
  print('5')
elif rating>=1200 and rating <=1399:
  print('4')
elif rating>=1400 and rating <=1599:
  print('3')
elif rating>=1600 and rating <=1799:
  print('2')
elif rating>=1800 and rating <=1999:
  print('1')
 rating=int(input()) rating int(input()) int input() input if rating>=400 and rating <=599:
  print('8')
elif rating>=600 and rating <=799:
  print('7')
elif rating>=800 and rating <=999:
  print('6')
elif rating>=1000 and rating <=1199:
  print('5')
elif rating>=1200 and rating <=1399:
  print('4')
elif rating>=1400 and rating <=1599:
  print('3')
elif rating>=1600 and rating <=1799:
  print('2')
elif rating>=1800 and rating <=1999:
  print('1') rating>=400 and rating <=599 rating>=400 rating 400 rating <=599 rating 599 print('8') print '8' elif rating>=600 and rating <=799:
  print('7') rating>=600 and rating <=799 rating>=600 rating 600 rating <=799 rating 799 print('7') print '7' elif rating>=800 and rating <=999:
  print('6') rating>=800 and rating <=999 rating>=800 rating 800 rating <=999 rating 999 print('6') print '6' elif rating>=1000 and rating <=1199:
  print('5') rating>=1000 and rating <=1199 rating>=1000 rating 1000 rating <=1199 rating 1199 print('5') print '5' elif rating>=1200 and rating <=1399:
  print('4') rating>=1200 and rating <=1399 rating>=1200 rating 1200 rating <=1399 rating 1399 print('4') print '4' elif rating>=1400 and rating <=1599:
  print('3') rating>=1400 and rating <=1599 rating>=1400 rating 1400 rating <=1599 rating 1599 print('3') print '3' elif rating>=1600 and rating <=1799:
  print('2') rating>=1600 and rating <=1799 rating>=1600 rating 1600 rating <=1799 rating 1799 print('2') print '2' elif rating>=1800 and rating <=1999:
  print('1') rating>=1800 and rating <=1999 rating>=1800 rating 1800 rating <=1999 rating 1999 print('1') print '1' rating=int(input()) int(input()) rating
rating=int(input())



if rating>=400 and rating <=599:
  print('8')
elif rating>=600 and rating <=799:
  print('7')
elif rating>=800 and rating <=999:
  print('6')
elif rating>=1000 and rating <=1199:
  print('5')
elif rating>=1200 and rating <=1399:
  print('4')
elif rating>=1400 and rating <=1599:
  print('3')
elif rating>=1600 and rating <=1799:
  print('2')
elif rating>=1800 and rating <=1999:
  print('1')

